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EClamp2122S - USB Downstream Port Filter & TVS

Datasheet Summary

Description

The EClamp®2122S is combination EMI filter and line termination device with integrated TVS diodes for use on USB 2.0 interfaces.

This device utilizes solid-state silicon-avalanche technology for superior clamping performance and DC electrical characteristics.

Features

  • ‹ EMI/RFI filtering and line termination with integrated ESD protection ‹ ESD protection for USB power (VBUS) and data lines (D+ & D-) to IIEC 61000-4-2 (ESD), ±25kV (air), ±20kV (contact) ‹ Filtering and termination for two USB data lines ‹ Series resistors for impedance matching ‹ Integrated pull down resistors as required by the USB specification for downstream ports ‹ Low TVS operating voltage (5.25V) ‹ Solid-state technology Mechanical Characteristics ‹ JEDEC SOT-23 6L package ‹ Pb-Free, Ha.

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Datasheet Details

Part number EClamp2122S
Manufacturer Semtech
File Size 219.49 KB
Description USB Downstream Port Filter & TVS
Datasheet download datasheet EClamp2122S Datasheet
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Full PDF Text Transcription

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EClamp2122S USB Downstream Port Filter & TVS For EMI Filtering and ESD Protection PROTECTION PRODUCTS - EMIClamp® Description The EClamp®2122S is combination EMI filter and line termination device with integrated TVS diodes for use on USB 2.0 interfaces. This device utilizes solid-state silicon-avalanche technology for superior clamping performance and DC electrical characteristics. They have been optimized for protection of USB interfaces in cellular phones and other portable electronics. USB line termination is achieved with a series 22Ω resistor on both the D+ and D- USB lines. These resistors preserve signal integrity by matching the cable impedance to that of the differential driver. The 15kΩ pull-down resistors complete the termination circuit on each line.
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